Precursor solutions of pNIPAM were prepared by mixing 1 M NIPAM (Sigma-Aldrich) solution with 0.5 mol % cross-linker (N,N-methylenebisacrylamide; Sigma-Aldrich) and 5 mol % photoinitiator (α-ketoglutaric acid; Sigma-Aldrich) in deionized (DI) water; polyethylene glycol diacrylate (PEG-DA) precursor solutions were prepared by mixing 33% (v/v) PEG(700)-DA (Sigma-Aldrich) with 4% (v/v) photoinitiator (2-hydroxy-2-methylpropiophenone; Sigma-Aldrich) in DI water. Stock solutions of SDS (Sigma-Aldrich), [C6mim][I] (Sigma-Aldrich), and NaOH (EMD Millipore) in DI water, and CaCl2.2H2O (Sigma-Aldrich) and benzoic acid (Acros Organics) in ethanol were prepared and diluted according to the experimental requirements; negative and positive PS suspensions were prepared by suspending 0.25% (v/v) fluorescent sulfonated PS beads, 1 μm in diameter (FS03F; Bangs Laboratories), and 0.5% (v/v) aminated PS beads, 1.8 μm in diameter (PA04N; Bangs Laboratories), respectively, in DI water. Surfactant-free suspensions of decane drops were created by sonicating 2% (v/v) decane (Sigma-Aldrich) in DI water for 1 min.
Peg 700 da
Manufactured by Merck Group
PEG(700)-DA is a polyethylene glycol-based diacrylate compound. It serves as a monomer for the synthesis of polymeric materials. The core function of PEG(700)-DA is to facilitate the formation of crosslinked polymer networks.
Automatically generated - may contain errors
Lab products found in correlation
N n methylenebisacrylamide, by Merck Group (1 mentions)
Sodium dodecyl sulfate (sds), by Merck Group (1 mentions)
Sodium hydroxide (naoh), by Merck Group (1 mentions)
Benzoic acid, by Thermo Fisher Scientific (1 mentions)
Decane, by Merck Group (1 mentions)
Pegda, by Merck Group (1 mentions)
Nipam, by Merck Group (1 mentions)
Cacl2 2h2o, by Merck Group (1 mentions)
2 hydroxy 2 methylpropiophenone, by Merck Group (1 mentions)
α ketoglutaric acid, by Merck Group (1 mentions)
Darocur 1173, by Merck Group (1 mentions)
2 protocols using peg 700 da
1
Photopolymerization of Hydrogels and Particles
2
Synthesis of Multifunctional Photothermal Nanoparticles
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Figure 1a shows the procedure of particle synthesis. During SFL, GNR@MCs were synthesized by shining a burst (100 ms) of 365 nm UV light after precursor flow stopped in a precisely synchronized manner (explained in the previous part). The PGNR solution was 3.5 fold concentrated by centrifugation (Eppendorf) in 13,200 rpm for 55 min to synthesize MCs with concentrated GNRs. Each GNR@MC comprised 60% (v/v) PEG700DA (Sigma-Aldrich) as multifunctional oligomers for network formation, 35% (v/v) concentrated PGNR solution as photothermal nanoparticle, and 5% (v/v) Darocur 1173 (Sigma-Aldrich) as a photoinitiator.
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